Adjustable crank-shaft bearing.



A`*gral with the base 1 and is supported by a ALBERT nnwnnn `iiirsir, on o AKnhNn, anunciante. I 1

To all/whomitemay concernr` i *Y i 1 1 j Be itknown that 1, ALBER'rf* DwARo Naisr, a citizen lof the UnitedA States, residing :at

Oakland, in the. county ofA Alameda and Y 5 State of California, have invented newand useful Improvements in Adjustable Crank Y ShatBearings,:of which the ,following is :a specification:` ,r j E f My Objectis to make'animproved adjustj loable crank shaftbearing .and my invention described and claimed. Figure 1 `1s a cross-section througha crank consists `in the .novel features herein shown,

case provided with. an adjustable crankshaft 15 bearing in accordance withthe principles of my invention.v Fig. 2 is a fragmentary horizontal sec- `tional detail on the line 2`42`of and;-

looking downwardly.

The crank case comprises the base 1 and the cap 2 provided with anges 3 and 4 secured together by bolts 5; there being man-holes 6 and 7 in the cap closed by covers 8 and 9.

The base 1 is semi-circular in cross-section and the adjustable crank shaft bearing 10 is located at the center of the circle and comprises the lower half bearing 11 and the upper half bearing 12.

The lower half bearing 11 is formed intevertical Vpost 13. and horizontal braces 14 and 15. Spring seats 16 and 17 are formed .by boring downwardly in the braces 14 and 15 and in the sides of the half bearingtll,

and guidepin seats 18 and 19 are formed by boring downwardly at the center of the spring seats 16 and 17. The guide pins 20 and 21 fit tightly in the seats 18 and 19 and have shoulders 22 and 23 resting upon the spring `seats 16 and 17. Expansive coil springs 24 and 25 fit around the pins 2() and 21 against the shoulders 22 and 23. Y

The upper half bearing 12 has spring seats 26 and 27 formed by boring upwardly upwardly through the sides of the bearing at the center of the spring seats 26 and 27 and the guide pins 2O and 21 extend slidingly through these seats 28 and 29.

A boss 30 extends upwardly from the half 5,5 bearing 12 at its center, there being an adjustng screw seat 31 bored downwardly through the nnau's'raiann onANKQsHAF'r manine;

ratenteanee. (1911s.

Si Appnatiqn medlmarchfas, 191s. seriarno. 224,646.1

into -thel bosscand there being. oil; holes 32 bored downwardly g, through `.the boss v, 4and bearing at the sides of. the seat31; -H-

shaft. Alvertical opening` 35; is vbored Vthrough the` cap 2 invertical` alinement with theadjusting screw' seat4 31 and al bushing 36 1s placedv in this opening, there' being Q smoothbore 37 throughgthe bushing; The Yfadjust1ng, ;screw`` v38 has `its loweryiendwff) turned to fit in the1seat -31, :there being a t wrench head. 40..l :above the" portion .39 and :there being afscrew fglthreadi .41a upon the upper end of the screw iitting loosely in lower end of the bushing 36, said bushing 36 having a ange 43`itting against the lower face of the cap 2 around the bore 35 to prevent the bushing from being pushed upwardly through the cap, and the nut 42 fitting against the ange 43.

Theexpansive coil springs 24 and 25 serve as equalizers to hold the upper half bearing 12 level relative to the lower half bearing 11. The nut 42 is adjusted upon the screw to compress the springs 24 and 25 to adjust the half bearing V12 to properly lit the crank 33. A wrench may be applied to the wrench seat 40 to hold the screw 38 while the nut 42 Vis being adjusted or the nut may be held while the screw is adjusted, and as the linings 34 wear, the screw may be adjusted from time to -time to take up the wear.

Bushings 44 and 45 of good metal are preferably inserted into the seats 28 and 29 and the upper ends of the pins 20 and 21 slidingly mounted in the bushings.

While I have shown a single pair of guide pins 2O and 21 and a single adjusting screw 38, it is obvious that if the bearing is long enough two pairs of guide pins may be used and two adjusting screws may be used.

Instead of mounting the upper end of the screw 38 in the cap 2 a spider might be provided.

An adjustable bearing constructed in accordance with the principles of my invention as shown and described does away with the necessityfor shims between the two half4 bearings and simplifies the adjustment of the bearing to keep it tight upon the shaft, the adjustment maybe quickly and easily made,

;he bore37;V An adjusting nut-42 is mount- "fedupon the screw threads 41 against the E. Y 60` A. e The crank shaft f33isplaced' between the bearings l11 and12, there being suitable llinings 34.1nthe1half bearingsaround the' the linings of the bearing Vrnay be. easily renewed and the beaslngsrmay bekent 0911.-

stantly tight, so as to prevent rattling and' pounding, thereby greatly in oreasingthelifeVV of the linings.

Yarieus Qhengesmay-bermada-in thefd* having a, baseandk aca-p,- of arloverahalf bearing formed integral with the baseand yhaving-'spr'ing :seats and guide. pin :sea-ts at A the lsidesofthellbean-ng, an uppenha'l bea-r1- `ing in .opposition to the .lower hal-f bearing and-having"- springuseats andguide pin` seats -in alinementrwith the'loWer--sprngl seats and .guide pinseats,. pins IJi-njtheguidepn seats',Y .expansiyeispringszaround: :the guide apins in -ztleifspringgseatsyand an; adg'ust-in-g Bierensy mountedl fto fr ypress downwardly. upon 4thmuppex:.halfhearing. or o f v2. an adjustable crank shaft bearing, the oombinatinfwith Aa :crank easeahaving 'a .bseyilld a Cap, of a lower half bearing rigidly niounteduponthehase, an upper half bearing in opposition 'tothe lower half bearbetween the two half bearingspand Y, justing screw engaging the cap Yand pressmg .downwardly i'uponlthe center of the upper half bearing. Y 3. In an adjustablecrankshaft-bearing flower-d 'hal`f-' lbeari--ngy :rigidly mountedg. an upperlhal! bearingvinioppositionto therlo'werv .half .'JSreaI'ng,v means .-forA holding the upper half bearing-.in alinement with. thelowerhalf bearing,y .any adjusting screw;havingV itsflower end *seated 1in Ithezfupper halfy bearing;V and means for holding the upperr.end-a,of 1the adjusting screw; 'sov :that by: manipulating fthe adjustingfsorew; theV upperfhalV hearing ymay .be Ypresse'd-toward{theflowen halffbearing. d.

In any fwheneefet'Ijhaversignedlfmy namelitd'thisaspecifrcatiom l ALBERT EDWARD' Genes or niemtersinybe otteihdf-ffqefnyents bye-@manganelvcmmmowoe 'Imate 1 i ,-Wasgngton, D. C. f 

